daitong

aloha protocol- matlab simulation

读入任意大小的图像，实现长和宽上的比例缩放,matlab 图像预处理处理中有用的小程序(imread a image and resize the size of the image)

基本粒子群优化算法Matlab源程序 主要用于对PSO的基本理解与思考 (Particle swarm optimization algorithm Matlab source)

快速、精确频率估计算法，噪声情况下语音信号频率估计(Fast, accurate frequency estimation algorithm, the case of speech noise frequency estimation)

A function that calculates radial distance between two given vectors

说明：  LD算法，实现信号的分析，频谱分析，避免矩阵的求逆运算(failed to translate)

Sanjit K.Mitra著《数字信号处理——基于计算机的方法》第三版配套光盘中的MATLAB示例程序(Sanjit K.Mitra a digital signal processing- a computer-based method, the third edition of the companion CD in the sample program MATLAB)

some solutions for the nomal questions with matlab

机械优化设计的作业 包括一维搜索方法（二次差值，牛顿法，黄金分割法），以及最速下降法和内点惩罚函数法及等值线图(Optimal Design of mechanical operations, including one-dimensional search method (the second difference, Newton' s law, golden section method), and the steepest descent method and interior point penalty function method and the contour map)

说明：  matlab的应用，我搜集来的，对学matlab挺有用的。(matlab application, I come to collect, to learn matlab Tingyou use.)